See how I used a luminosity mask in Photoshop to correct the color in the background of this photo while protecting the subject.

Adobe Photoshop has some really good color correction tools hidden in the Curves tool, but sometimes they are too strong when you apply them globally. By targeting your color cast adjustments via a luminosity mask, you can fix color casts in specific tone ranges such as shadows, highlights, or midtones.

A powerful way to
adjust images in Adobe Photoshop

What are luminosity masks?

Luminosity masks are grayscale pixel images based on the brightness values in your image. Because they are created from your individual photographs, each mask blends in perfectly and allows for precise tone-based selections. Luminosity masks allow you to adjust brightness, contrast, and color on specific tone ranges in your image without the need for brushes or other selection tools.

Luminosity masks let you target adjustments to tone ranges and are based on the pixels in your photographs.